HeapProfiler: replace pointer based matching algorithm with string matching algorithm for strings_ member.
pros: decreased snapshot size.
cons: increased serialization time.
I've tested the implementation on gmail 90mb heap.
I saw no speed degradation on the serialization step.
The snapshot size lost ~3% of its size. 100Mb -> 97Mb.
BUG=none
R=alph@chromium.org, yangguo@chromium.org
Review URL: https://codereview.chromium.org/
24120006
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16725
ce2b1a6d-e550-0410-aec6-
3dcde31c8c00